<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <!-- 页面主体 -->
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="isCollapse? '64px':'200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!-- 侧边栏菜单区域 -->
                <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF" unique-opened :collapse='isCollapse' :collapse-transition='false' :router='true' :default-active='activePath'>
      <!-- 一级菜单 -->
      <el-submenu :index="item.id+''" v-for="item in menulist" :key='item.id'>
        <!-- 一级菜单模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
         <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key='subItem.id' @click="saveNavState('/'+subItem.path)">
                     <template slot="title">
            <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template>
         </el-menu-item>
      </el-submenu>
    </el-menu>
            </el-aside>
            <!-- 右侧内容 -->
            <el-main>
            <router-view></router-view>
        </el-main>
        </el-container>
    </el-container>
</template>
<script>
export default {
    data(){
        return{
            menulist:[],
             iconsObj:{
                '125':'iconfont icon-users',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            isCollapse:false,
            activePath:''
        }
    },
    created(){
        this.getMenuList();
        this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear();
            this.$router.push('/login')
        },
        async getMenuList(){
            const {data:res}=await this.$http.get('menus')
            if(res.meta.status!==200) return this.$message.error(res.meta.msg)
            this.menulist=res.data
        },
        toggleCollapse(){
            this.isCollapse=!this.isCollapse
        },
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath=activePath
        }
    }
}
</script>
<style lang="less" scoped>
    .home-container{
        height: 100%;
    }
    .el-header{
        background-color: #373d41;
        display: flex;
        justify-content:space-between;
        padding-left: 0;
        color: #fff;
        align-items: center;
        font-size: 20px;
        >div{
            display: flex;
            align-items: center;
            span{
                margin-left: 15px;
            }
        }
    }
    .el-aside{
        background-color: #333744;
        .el-menu{
            border-right: none;
        }
    }
    .el-main{
        background-color: #EAEDF1;
    }
    .iconfont{
        margin-right: 10px;
    }
    .toggle-button{
        background-color: #4A5064;
        font-size: 10px;
        line-height: 24px;
        color: #fff;
        text-align: center;
        letter-spacing: 0.2em;
        cursor: pointer;
    }
</style>